a. Run the following command:
$ sudo apt install minicom
$ sudo minicom -D /dev/ttyUSB0
b. Check the profile list:
$ at^mcfg=?
c. Select your target, then the modem will auto reset. For example, select T-mobile.
$ at^mcfg=0
$ at^mcfg?
3. Disable b30, b42, and b48 bands (optional).
Some regions require operators to disable b30, b42, and b48 bands. The disabled bands are reopened after the firmware
upgrade. Use the following commands to disable them again.
$ sudo apt install minicom
$ sudo minicom -D /dev/ttyUSB0
$ at^slband=LTE,1,30,42,48
$ at^slband?
66
Setting Up the Ubuntu Operating System
